Lake Guerlédan Reservoir
Large artificial lake in Brittany, created by dam
In central Brittany, Lac de Guerlédan fills a 1930s hydro valley; visitors hire boats, follow trails along the drowned valley and cycle the lake road, passing exposed stone bridges and wooded slopes.
Lake Guerlédan at a Glance#
Address: Lac de Guerlédan, Brittany, France (near Mûr-de-Bretagne)
Website: https://www.tourisme-morbihan.bzh/
Hours: Daily sunrise-sunset (park areas)
Admission: Free to visit the lake perimeter; water activities may carry fees
How to Get to Lake Guerlédan#
Drive from Rennes or Pontivy via D roads toward Mûr-de-Bretagne; the lake is signposted and has several parking areas and trailheads.
Tips for Visiting Lake Guerlédan#
- Cycle the full loop to appreciate the variety of viewpoints along the dam
- Sample local crepes or cider in nearby market towns-Brittany is proud of both
- Bring a windproof jacket-the lake is exposed in places and can be breezy
Best Time to Visit Lake Guerlédan#
Summer is best for boat hires and activities, while spring and autumn offer quieter visiting conditions.
Weather & Climate near Lake Guerlédan#
Lake Guerlédan's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in August) and cold winters (coldest in January). Temperatures range from 3°C to 21°C. Moderate rainfall (978 mm/year).
January
January is the coolest month with highs of 8°C and lows of 4°C. Significant rainfall (113 mm).
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February
February is cold with highs of 9°C and lows of 3°C. Regular rainfall (90 mm).
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March
March is cold with highs of 11°C and lows of 5°C. Regular rainfall (81 mm).
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April
April is cold with highs of 12°C and lows of 6°C. Moderate rainfall (65 mm).
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May
May is cool with highs of 16°C and lows of 9°C. Moderate rainfall (70 mm).
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June
June is cool with highs of 18°C and lows of 11°C. Moderate rainfall (54 mm).
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July
July is cool with highs of 21°C and lows of 13°C. Moderate rainfall (47 mm).
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August
August is cool with highs of 21°C and lows of 13°C. Moderate rainfall (54 mm).
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September
September is cool with highs of 19°C and lows of 11°C. Moderate rainfall (75 mm).
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October
October is cool with highs of 15°C and lows of 9°C. Regular rainfall (97 mm).
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November
November is cold with highs of 12°C and lows of 6°C. The wettest month with heavy rain (119 mm).
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December
December is cold with highs of 9°C and lows of 4°C. Significant rainfall (113 mm).